Epson L800 Service Manual page 30

L800/L801
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Disassembling the Main Board Unit
1. Remove the Main Board Unit (p.27).
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Do not apply unnecessary force on the screw receiving parts of
C A U T I O N
the Lower Shield Plate M/B, as they are easy to deform.
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When assembling or disassembling the Upper Shield Plate M/B,
be careful of its sharp edges.
2. Remove the seven screws and remove the Upper Shield Plate M/B.
Screw (6 pcs.): C.B.S. M3x6 (tightening torque: 5-7 kgf.cm)
Screw (1 pc.): C.P. M3x6 (tightening torque: 4-6 kgf.cm)
(The numbers shown in the figure indicate the order of tightening the screws.)
3
Screw Receiving Part
Figure 1-27. Removing the Upper Shield Plate M/B
Disassembly/Reassembly
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Lower Shield Plate
5
M/B
Upper Shield Plate
M/B
2
Screw Receiving Part
1
7
4
6
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Be careful of the sharp edges shown in the figure below when
C A U T I O N
assembling or reassembling.
3. Remove the two screws and remove the Shield Plate M/B Sub.
Screw (2 pcs.): C.B.S. M3x6 (tightening torque: 4-6 kgf.cm)
(The numbers shown in the figure indicate the order of tightening the screws.)
4. Remove the screw and remove the Main Board Unit.
Screw C.B.S. M3x10 (tightening torque: 4-6 kgf.cm)
Upper Side: Main Board
Lower Side: Lower Shield Plate M/B
Sharp edge
Figure 1-28. Removing the Main Board
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When installing the Main Board, match the positioning hole
with the guide pin shown in Fig.1-28.
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Tighten the screws in the order given in
Fig.1-28.
Main Board Unit
[Rear Side]
Positioning Hole and
Guide Pin
Revision A
Shield Plate
M/B Sub
1
2
Fig.1-27 (p.29),
29
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